Smoke-consuming furnace



(No Model.) 2 Sheets-Sheet 1. 1

L. E. KILLIAN. SMOKE GONSUMING FURNACE.

No. 540.990. Patented June 11, 1895.

- I (No Model.) 2 SheetsSheet 2.

L. E. KILLIAN..

SMOKE GONSUMING FURNACE. Patented June 11, 1895.

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ATENT LAWRENCE E. KILLIAN, OF ST. LOUIS, MISSOURI.

SMOKE-CONSUMING FURNACE.

SPECIFICATION forming part of Letters Patent No.'540,990, dated June 11,1895.

Application filed March 23, 1895.

T0 ctZZ whom it may concern:

Be it .known that I, LAWRENCE E. KILLIAN, of the city of St. Louis andState of Missouri, have invented certain new and useful Improvements inSmoke-Consuming Furnaces, of which the following is a full, clear, andexact description, reference being had to the accom panying drawings,forming a part hereof.

My invention relates to an improved smoke consuming furnace, andconsistsin the novel construction, combination and arrangement of parts,hereinafter described and claimed.

In the drawings, Figure 1 is a longitudinal vertical sectional view ofaboiier-furn ace constructed in accordance with my invention. Fig. 2 isa vertical cross-sectional view taken, approximately, on the indicatedline 2 2 of Fig. 1. Fig. 3 is a horizontal sectional viewtaken,approximately, onthe indicatedline 3 3 of Fig. 1. Fig.4 is adetail sectional View taken, approximately, on the indicated line 4 4 ofFig. 3. Fig. 5 is asectional view taken, approximately, on the indicatedline 5 5 of Fig. 4 and looking in the direction as indi' cated by thearrow A, Fig. 4. Fig. 6 is aview in perspective of one of a pair ofbearingboxes of which I make use in carrying out my invention. Fig. 7 isa View in perspective of a plate having an integral ratchet-wheel ofwhich I make use in carrying out my invention. Fig. 8 is across-sectional view taken, approximately, on the line 8 8 of Fig. 3.Fig. 9 is a detail plan view of a portion of one of the rotating gratesof which I make use in carrying out my invention. Figs. 10 and 11 aredetail views, in perspective,of portions of auxiliary grates used in myimproved smokeconsuming furnace.

Referring by numerals to the accompanying drawings, 1 indicates theboiler that is located in the usual manner between the side-walls 2 ofthe furnace and .between the usual boiler front 3 and rear wall 4. Theinteriors of the side-walls and the rear wall of the furnace are linedwith fire-brick 5 in'the usual manner.

Located beneath the forward end of the boiler 1 and a suitable distancefrom the floor line is the main fire-grate 6. Extending from oneside-wall 2 to the other and slightly above and in the rear of the rearedge of the grate 6 is a metallic bar 7 that supports a fire-brickSerial No. 542,989. (No model.)

arch 8, the same extending from one side-wall to the other, said archbeing formed with a semi-circular top edge in order to receive the bodyof the boiler 1. The space between the lower front edge of this arch 8and the rear edge of the grate 6 is equal to or slightly larger than thecombined area of the boiler tube openings' 9 indicates a bridge-wallfaced with firebrick that is built approximately beneath thelongitudinal center of the boiler 1 slightly in the rear of the arch 8,and said bridge-wall 9 extends from one side-wall 2 to the other. Thespace between the top surface of this bridge-wall 9 and the under sideof the boiler 1, as well as the space between the front upper edge ofsaid bridge-wall 9 and the rear face of the arch 8, is equal to thecombined areaof the boiler tube openings.

Formed inthe face of the bridge-wall 9 directly in the rear of the lowerend of the arch 8 is a recess or depression 10, the same extending fromone side-wall 2 to the other and being semi-circular in cross-section.

The space between the rear lower edge of the arch '8 and the line alongthelower edge of the semi-circular recess or depression, or where saiddepression starts in the bridgewall, is equal to or slightlylarger thanthe combined area of the boiler tube openings.

Formed inthe face of the bridge-wall 9 immediately below the recess 10and extending transversely from one wall 2 to the other is a recess ordepression 1.1, the same being formed on a segment of a circle havingits center at a, point midway between the face of the arch beneath therecess or depression 10 and the rear edge of the grate 6.

Located immediately in frontof thebridge- Wall 9 and between theside-walls 2 isa vertically arranged metallic-plate 12 that extendsbeneath and sustains the rear edge of the grate .6. An opening 13 isformed in this plate 12 immediately in front of the bridge-wall 9 andadjacent the floor-line of the furnace.

Fixed to the under side of the rear edge of the grate 6 and extendingfrom one side wall 2 to the other is a metallic bar 14, from whichdepend and extend slightly forward integral fingers 15.

Located in the recess 11 in the face of the ICO ings 19.

Rectangular blocks 21 have provided on their under sides semi-circularbearings 22 that coincide with the semi-circular bearings 19, and saidblocks 21 are also provided with dowel-pins 23' that enter thevertically arranged apertures in the angular blocks 18.

Rotating grates 24 comprise center bars 25, with which are formedintegral and extend laterally in opposite directions fingers 26. Theinner ends of these bars 25 are formed into short journals 27 thatextend toward one another and bear in an aperture 28 formed in thecenter-plate 12. The outer ends of these bars 25 are formed intojournals29 that bear in the pair of longitudinally arranged journal-bearingsformed between the blocks 21 and block 18." Rigidly fixed upon the endof these journals 29 are beveled pinious 30.

Longitudinally extending passages 31 are formed in the sidewalls 2 ofthe furnace and extend from the blocks 18 forward to the front plate 3of the furnace. Extendinglongi tudinally through these passages 31 areshafts 32, the rear ends of which pass through and are journaled in thetransverse pair of journal'bearings formed by the blocks 2i and block18. Upon the ends of these shafts 32 that extend through said bearingsare rigidly .fixed beveled pinious 33 that mesh with the beveled pinious30 previously mentioned. The forward ends of these shafts 32 extendthrough apertures 34 formed in the front plate 3 of the furnace, andbolted to said front-plate 3 over each one of the apertures 34 areplates 35,-from which project laterally integral bearings 36, throughwhich the ends of the shafts 32 pass and project. The peripheries ofthese bearings 36 have formed therein a ser-ies of radiallyarranged andlongitudinally extending grooves or notches 37.

Rigidly fixed upon the outer ends of the shafts 32 are disks 38, theperipheries of which are provided with a series of radially arrangedbores or apertures 39, and formed integral with the rear faces of saiddisks 38 are a pair of ears 40. Between said ears 40 in the disk 38 is aslot 40. Pivoted between the upper ends of the cars 40 is a hand-lever42, in the lower end of which and below the pivot-point is formed aneccentric slot 43.

A vertically moving dog or catch 44 has its lower end formed so as toengage in the notches 37 in the bearing 36,and said dog 44 is carriedand moved by the hand-lever 42 by means of a pin 45 that passes throughthe upper end of said dog and through the eccentric slot 43.

The operation is as follows: After the furnace has been fired in theusual manner, a quantity of the live coals from the grate 6 is locatedupon the rotating, grates 24, said grates 24 being normally positionedas shown by solid lines in Fig. 1. The draft through these grates 24 andthe bed of coals thereon will keep said bed of coals in a very highlyheated and practically incandescent state, and the heat from said bed ofcoals and from the main fire located upon the grate 6 will heat to avery high degree the lower portion of the arch 8 and the front face andupper portion of the bridge-wall 9, or that portion of said bridge-wall9 adjacent the recess or depression 10. The various spaces between thearch 8, grate 6 and bridge-wall 9 being of the same size or slightlylarger than the combined area of the boiler tube openings, the heat,products of combustion and draft are free to pass through the gratesbetween the arch and bridge-wall and through the boilertubes in theusual manner, and at no place is this passage or draft choked or in anyway retarded. \Vhen additional fuel is supplied in the usual manner tothe fire upon the grate 6, the products of combustion from said newlyapplied fuel will pass from the grate (5 over the bed of coals locatedupon the rotating grates 24, and as it passes over said bed of coals,will, together with the draft of air through the grates 24, be entirelyconsumed by combustion in the recesses 10 and between the arch 8 andbridge-wall 9. To rotate or partially rotate the grates 24 for bringingthe rearbank of the bed of live coals upon said grates closer to thelower end of the arch 8, or to dislodge any clinkers that might formupon said grates 24 and between the fingers 15 and 17, the followingoperation takes place: The hand-levers 42 normally occupy verticalpositions and the dogs 44 are in engagement with certain of the notches37. The operator grasps the upper end of said hand-lever and pulls thesame forward and away from the front plate of the furnace,dotted linesin Fig. 4 showing the position the hand-lever assumes after it has beenpulled forward. \Vith said forward movement of said hand-lever, the pin45 is carried upwardly by reason of the peculiar inclination of theeccentric slot 43, and necessarily the dog 44 is carried out ofengagement and away from the notches 37 of the bearing 36. Saidhand-lever 42 now extends at an angle relative to the disk 38 and actsas a crank-handle therefor, and by means of said hand-lever said diskcan be rotated in either direction. As said disk is rotated, the shaft32 will necessarily be rotated, and rotary motion will be imparted tothe beveled pinion .33. Said beveled pinion 33 will in turn impartrotary motion to the beveled pinion 30, and as said beveled pinion 30 isrigidly fixed upon the bearing 29 that is formed integral with the grate24, said grate will be rotated as desired. The grates 24 being separatefrom each other, it is necessary of course to repeat this operation inrotating or par- IIO tially rotating either grate. The fingers 26 of thegrate 24 are so located as that they will readily pass between thefingers 15 of the bar 14 and the fingers 17 of the bar 16. The dottedlines in Fig. 1 show the position assumed by one of the grates 24 whenthe'same has been rotated so as to raise the rear end and bed of coalsthereon into the same horizontal plane with the grate 6. When the grates24 have been moved to the position as shown by dotted lines in Fig.1,the draft to said bed of coals will readily enter between the fingers15 of the bar 14. If it is found impossible to turn the grates 24 bymeans of the hand-levers 42, a long rod or lever, such as a crowbar, maybe used in turning the disks 38 on the ends of the shafts 32, the end ofsaid rod or lever being positioned in one of the bores or recesses 39 inthe periphery of the disk.

while in the act of turningsaid disk and contiguous parts.

A boiler furnace of my improved construetion is easily constructed, issimple in operation, and is very efficient in use, as the entireproducts of combustion are completely consumed before they pass into theboiler tubes. The horizontal metallic supportingbar 7 may be replacedwith common feed-water pipes, or other tubular supports, and thefunction of supporting the depending wall 8 will be substantiallythesame in-either case. What I claim is 1 v 1. In an improved smokeconsuming furnace, an arch located beneath the boiler and in a verticalplane to the rear of the fire-grate, a bridge-Wall built up from thefloor of the furnace immediately in the rear of the arch and provided inits face with a transversely positioned semi-circular depression orrecess, and a rotating grate operating between the fire-grate andlthebridge-wall and immediately beneath the arch.

2. In an improved smoke consuming furnace, a metallic bar extending fromone sidewall of the furnace to the other beneath the boiler, an archbuilt from said bar to the boiler, a bridge-wall built up from the floorof the furnace immediately in the rear of the arch, said bridge-wallbeing constructed with a semi-circular recess or depression in its faceopposite the lower end of the arch, a vertically arranged platelocatedmidway between the side-walls of the furnace in front of thebridge-Wall, a bar provided with downwardly depending fingers fixed tothe under side of the rear edge of the fire-grate, a barlocated in thefront face of the bridge-wall and provided with integral forwardlyextending fingers, a pair of rotating grates operating between thecenter-plate of the side-walls of the furnace and between the end of thefire-grate and the bridge-wall, and means for rotating said grates fromthe front of the furnace.

3. In asmoke consuming furnace,a pair of bearing-boxes arranged in theopposite sidewalls of the furnace, rotating grates located within thefurnace'and provided with integral journals that pass through thelongitudinally arranged bearings of the boxes, beveled pinions fixed tothe ends of said journals, shafts passing longitudinally through thewalls of the furnace to the front plate thereof, the rear ends of saidshafts being journaled in the horizontal bearings of the bearing-boxes,bev eled pinions mounted upon the rear ends of said shafts and meshingwith the before-mentioned beveled pinions, plates bolted to the boilerfront, bearings formed integral with said plate and through which theforward ends of the shafts pass, said bearings being constructed withperipheral notches or depressions, disks mounted upon the outer ends ofthe shafts and constructed with a series of peripheral bores orrecesses, hand-levers pivoted to the rear sides of said disks andconstructed with eccentric grooves in their lower ends, and dogs carriedby the lower ends of said hand-levers, the lower ends of which engage inthe notches of the bearings bolted to the front of the boiler-plate.

In witness whereof I affix my signature in presence of two witnesses.

' LAWRENCE E. KILLIAN. Witnesses:

M. G. IRION,

J OHN O. HIGDON.

